Star Anodising Kent, South East

 

Star Anodising Services

Anodic coating, Alochrome, Chromate conversion coatings, Chromic acid anodising, Electropolishing stainless steel, Hard Anodising, Powder coating, Sulphuric acid anodising, Wet painting, Zinc plating.

Anodic Coating

British Standard BS EN ISO 7599 anodic coating on aluminium.

Anodic coating is widely used for the treatment of aluminium and aluminium alloys. It provides an attractive decorative and protective finish.

Anodic coating ranges from 5 to 25 microns. It is recommended that for the best possible protection for exterior use an application of 25 microns be used.

After anodising, articles can be dyed to various colours.

Alochrome & chromate conversion coating

Alocrom 1200 chromate conversion coatings & Alocrom  (RoHS complaint chrome free).

DEF STAN 03-18. DTD900, MIL-DTL-5541F (replaces MIL-C-5541E)

Generally used as a process prior to paint, because it improves paint adhesion.

Alocrom also improves corrosion resistance while not significantly affecting electrical contact resistance.

Types and class as established by MIL-DTL-5541F

Type 1: compositions containing hexavalent chromium (parts are yellow, green & patches of red, brown in appearance).

Type 2: compositions containing no hexavalent chromium (colourless to yellow).

Class 1A: for maximum protection against corrosion, painted or unpainted.

Class 3: for protection against corrosion where low
electrical resistance is required (parts are colourless in appearance).

Chromic Acid Anodising

Chromic anodising MIL-A-8625 TYPE 1:

Chromic acid anodising is used on aluminium parts where a high resistance to corrosion is required.

This process is mainly used in the defence and aircraft industries.

Electropolishing Stainless Steel

Electropolishing is being used more and more on a wide scale and is generally treated on such parts as surgical instruments, wire work and many other welded parts.

Hard Anodising

MIL-A-8625 TYPE 3 BS EN ISO 10074

Hard anodise procedures are typically applied to heavy wear industrial parts that are intended for use in aggressive or highly corrosive applications.

Powder Coating

Decorative Powder Coating including pre-treatment on both steel and aluminium from small components to lengths of up to six metres.

Sulphuric Acid Anodising (with a range of colours)

BS ISO 7599, MIL-A-8625 TYPE 2

ANODISING is the production of an anodic coating on aluminium, which improves corrosion resistance and can be dyed various colours.

The surface texture can be either polished, brushed, satin or natural and because of the variety of specifications of aluminium it is advisable to speak to our technical staff before deciding upon a finish.

British standards for anodic coatings on aluminium BS1615 specifies the thickness of the anodic film necessary for various applications and related parameters.

MINIMUM AVERAGE THICKNESS
GRADE BS1615 MICRONS INCH
AA35 35 0.0014
AA25 25 0.0010
AA15 15 0.0006
AA10 10 0.0004
AA5 5 0.0002
AA3 3 0.00012
AA1 1 0.00004

Wet Painting

Zinc Plating (Vat and Barrel)

DEF STAN 03-20, BS EN ISO 2081

Zinc plating is intended as a general purpose protective finish on iron and steel parts. Depending on requirements and for general purpose use, zinc deposit is from 8 to 25 microns in thickness.

Plated parts are usually bright in appearance and can be passivated in either a bright blue pass which produces a clear blue coating enhancing the appearance of the zinc plating, or a coloured passivate which produces an iridescent yellow/green with patches of red in appearance.

 

 

Hard Anodising Kent

 

Anodising quality

 

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